摘要
利用2011年12月至2012年6月北京观象台云高自动观测仪器对比试验数据,以微脉冲激光雷达(MPL)为参考、结合人工目测,对3台激光云高仪观测数据进行分析评价。分析2种天气条件(高能见度、低能见度)下漏判情况、误判情况和云高准确性3个方面;同时评价了激光云高仪对几种典型云属的探测能力。结果表明,激光云高仪与MPL一致性较好,大气中的雾、霾等气溶胶粒子是造成其测量不准确的主要原因,可通过提高激光发射单脉冲能量、优化光学系统来提高激光云高仪探测能力。
An analysis is made of the data from a comparative observation test for cloud height Indicators, which was carried out at the Beijing Meteorological Observatory from December 2011 to June 2012. The Sigma Space Micro Pulse Lidar （MPL） was used as a reference along with visual assessment. The observational data of different weather conditions are analyzed mainly from the aspects of false layers, missed layers, and layer height comparability, respectively, as well as high and low visibility. There is also an assessment towards the detection capability for several typical cloud genera. The results indicate that ceilometers are in good consistency with MPL; aerosol particles （fog, haze） in the atmosphere are the main cause of inaccurate measurements; the capability of ceilometers can be improved by increasing the single laser pulse energy and optimizing the optical system.
出处
《气象科技》
北大核心
2017年第1期22-29,共8页
Meteorological Science and Technology
